[new release] git (4 packages) (3.18.0)
CHANGES:
- Show error message when the HTTP/Git handshake has an error (@reynir, mirage/ocaml-git#647)
- Add `x-maintenance-intent` (@hannesm, mirage/ocaml-git#648)
- De-functorize `ocaml-git` (@hannesm, mirage/ocaml-git#650)
- Use the last version of `paf` (@dinosaure, mirage/ocaml-git#651)